Computer Networks Chapter 8: Transport Layer

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Questions and Answers

What is the primary function of the transport layer in end-to-end communication?

  • Providing error-free transmission of data
  • Routing data packets between networks
  • Assigning IP addresses to devices
  • Managing the transportation of data between applications (correct)

Which of the following is a characteristic of the TCP protocol?

  • No guarantee of data delivery
  • Connectionless communication
  • No error-checking mechanism
  • Use of port numbers for communication (correct)

What is the primary purpose of using port numbers in TCP and UDP?

  • To differentiate between applications (correct)
  • To regulate the amount of data transmitted
  • To number and sequence segments
  • To establish a connection between the source and destination

What is the purpose of TCP session establishment and termination processes?

<p>To facilitate reliable communication (A)</p> Signup and view all the answers

Which protocol does not guarantee the delivery of data?

<p>UDP (C)</p> Signup and view all the answers

What is the primary purpose of UDP client processes?

<p>To establish communication with a server (B)</p> Signup and view all the answers

When is it best to use UDP transmissions?

<p>When speed is more important than reliability (A)</p> Signup and view all the answers

What is the purpose of the three-way handshake in TCP?

<p>To establish a connection between the source and destination (B)</p> Signup and view all the answers

Which application uses UDP?

<p>Video Streaming (D)</p> Signup and view all the answers

What is the main difference between TCP and UDP?

<p>TCP is connection-oriented while UDP is connectionless (D)</p> Signup and view all the answers

What is the purpose of Netstat?

<p>To examine TCP connections that are open and running on a networked host (D)</p> Signup and view all the answers

What is the primary responsibility of transport layer protocols in the TCP/IP model?

<p>Tracking the individual communication between applications on the source and destination hosts (C)</p> Signup and view all the answers

What is the purpose of segmenting data in the transport layer?

<p>To make data manageable and reassemble it at the destination (C)</p> Signup and view all the answers

What is multiplexing in the transport layer?

<p>Enabling many different communications from many different users on the same network at the same time (C)</p> Signup and view all the answers

What is the main difference between TCP and UDP?

<p>TCP provides reliable delivery, while UDP provides basic functions for delivery with no reliability (B)</p> Signup and view all the answers

What is the primary purpose of the first step in the TCP three-way handshake?

<p>To verify the destination device's active service and port number (B)</p> Signup and view all the answers

What is the trade-off between TCP and UDP?

<p>Reliability vs network overhead (A)</p> Signup and view all the answers

What is the purpose of the sequence number in TCP reliability?

<p>To reassemble segments into original order (C)</p> Signup and view all the answers

Why does TCP make larger demands on the network?

<p>Because it provides reliable delivery ensuring that all of the data arrives at the destination (A)</p> Signup and view all the answers

What determines the amount of data that can be transmitted before an acknowledgement is required?

<p>Window size (A)</p> Signup and view all the answers

What is the purpose of the acknowledgement number in TCP reliability?

<p>To confirm receipt of data (C)</p> Signup and view all the answers

What happens in the second step of the TCP three-way handshake?

<p>The server requests a server-to-client communication session (D)</p> Signup and view all the answers

What is the primary difference between TCP and UDP?

<p>TCP uses a three-way handshake, while UDP does not (C)</p> Signup and view all the answers

What is the primary function of the Transport layer?

<p>To provide multiplexing, segmentation and reassembly, and error checking (A)</p> Signup and view all the answers

Which protocol is commonly used by applications that cannot tolerate delay?

<p>UDP (C)</p> Signup and view all the answers

What is the purpose of port numbers in the Transport layer?

<p>To provide a 'tunnel' for data to reach the appropriate application (C)</p> Signup and view all the answers

Which of the following applications typically uses TCP?

<p>SMTP (D)</p> Signup and view all the answers

What is the primary difference between TCP and UDP?

<p>TCP is more reliable than UDP (D)</p> Signup and view all the answers

Which protocol is used by applications that can tolerate small loss of data?

<p>UDP (A)</p> Signup and view all the answers

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